This service manual covers service and repair of ATV Yamaha YTM200, YTM225 and YFM200.

Models Covered:

1983 Yamaha YTM200EK Yamahauler
1983 Yamaha YTM225DXK Tri-Moto
1984 Yamaha YTM200L Tri-Moto
1984 Yamaha YTM225DXL Tri-Moto
1985 Yamaha YFM200N-S Moto-4
1985 Yamaha YTM200N Tri-Moto
1985 Yamaha YTM225DXN Tri-Moto
1986 Yamaha YFM200DXS Moto-4


Manual Contents:

QUICK REFERENCE DATA

CHAPTER ONE / GENERAL INFORMATION
Manual organization / Notes, caution and warnings / Safety first / Service hints / Torque specifications / Fasteners / Lubricants / Parts replacement / Basic hand tools / Test equipment / Mechanic's tips

CHAPTER TWO / TROUBLESHOOTING
Operating requirements / Troubleshooting instruments / Engine starting / Engine performance / Engine noises / Engine lubrication / Clutch / Transmission / Carburetor / Charging system / Electrical starting system / Electrical problems / Ignition system / Excessive vibration / Front suspension and steering / Brake problems

CHAPTER THREE / LUBRICATION, MAINTENANCE AND TUNE-UP
Routine checks / Service intervals / Tires and wheels / Battery / Periodic lubrication / Engine oil and filter change / Front fork oil change / Final drive oil change / Steering head bearing lubrication / Knuckle and steering shaft lubrication / Periodic maintenance / Drive chain adjustment / Brake adjustment / Clutch adjustment / Decompression lever adjustment / Air cleaner service / Fuel shut off valve and filter service / Steering inspection and steering head adjustment / Suspension adjustment / Tune-up / Torque cylinder head bolts / Valve clearance adjustment / Camshaft chain adjustment / Engine compression check / Ignition timing / Idle speed adjustment / Specifications

CHAPTER FOUR / ENGINE
Engine principles / Engine cooling / Servicing engine in frame / Engine / Cylinder head / Camshaft/rocker arms / Camshaft chain / Cam chain tensioner (automatic type) / Cam chain tensioner (adjustable type) / Valves and valve components / Cylinder / Piston and piston pin / Piston rings / Oil pumps / Crankcase and crankshaft / Alternator rotor, starter clutch assembly and gears / Recoil starter / Middle gear case / Middle/reverse gear case / Break-in / Specifications

CHAPTER FIVE / CLUTCH AND TRANSMISSION
Clutch / Clutch lever and external shift mechanism / Drive sprocket (YTM200K, L, N) / Transmission / Specifications

CHAPTER SIX / FUEL AND EXHAUST SYSTEMS
Air cleaner / Carburetor operation / Carburetor service / Carburetor adjustments / Throttle cable / Fuel tank / Fuel shutoff valve / Exhaust system / Specifications

CHAPTER SEVEN / ELECTRICAL SYSTEM
Charging system (shaft drive models) / Charging system (chain drive models) / Alternator / Ignition system (fully transistorized) / Ignition unit / Ignition coil / Pickup coil / Spark plugs / Starting system / Lighting system / Switches / Fuse / Specifications

CHAPTER EIGHT / FRONT SUSPENSION AND STEERING (YTM200 AND YTM225)
Front wheel / Front hub / Handlebar / Steering head / Front forks / Tires / Specifications

CHAPTER NINE / FRONT SUSPENSION AND STEERING (YFM200)
Front wheel / Front hubs / Steering / Steering shaft / Handlebar / Front shock absorbers (YFM200DXS) / Specifications

CHAPTER TEN / REAR SUSPENSION AND FINAL DRIVE
Rear wheel / Rear axle (chain drive) / Rear axle (drive shaft) / Drive chain (YTM200K, L, and N) / Driven sprocket (chain drive) / Tire changing and tire repairs / Rear shock absorber (YTM225 and YFM200DXS) / Swing arm (YTM225 and YFM200DXS) / Final drive unit and drive shaft / Rear axle bearing holder / Specifications

CHAPTER ELEVEN / BRAKES
Front drum brake / Rear disc brake / Brake cables / Specifications

INDEX

WIRING DIAGRAMS